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At least 181 records · Page 10
All sourcesNASA NTRSDOE OSTI
DOE OSTI2025

Mapping the three-dimensional fermiology of the triangular lattice magnet EuAg 4 Sb 2

In this paper, we report the temperature-field phase diagram as well as present a comprehensive study of the electronic structure and three-dimensional fermiology of the triangular-lattice magnet EuAg 4 ⁢Sb 2 , utilizing quantum oscillation measurements, angle-resolved photoemission spectroscopy, and first-principles calculations. The complex magnetic phase diagram of EuAg 4 ⁢Sb 2 highlights many transitions through nontrivial AFM states. Shubnikov-de Haas and de Haas-van Alphen oscillations were observed in the polarized ferromagnetic state of EuAg 4 ⁢Sb 2 , revealing three pairs of distinct spin-split frequency branches with small effective masses. A comparison of the angle-dependent oscillation data with first-principles calculations in the ferromagnetic state and angle-resolved photoemission spectra shows good agreement, identifying tubular hole pockets and hourglass-shaped hole pockets at the Brillouin zone center, as well as diamond-shaped electron pockets at the zone boundary. As the temperature increases, the frequency branches of the tiny hourglass pockets evolve into a more cylindrical shape, while the larger pockets remain unchanged. This highlights that variations in exchange splitting, driven by changes in the magnetic moment, primarily impact the small Fermi pockets without significantly altering the overall band structure. As a result, this is consistent with first-principles calculations, which show minimal changes near the Fermi level across ferromagnetic and simple antiferromagnetic states or under varying on-site Coulomb repulsion.

36 MATERIALS SCIENCE↗
DOE OSTI2023

Magnetic Breakdown and Topology in the Kagome Superconductor CsV 3 Sb 5 under High Magnetic Field

The recently discovered layered kagome metals of composition AV 3 Sb 5 (A = K, Rb, Cs) exhibit a complex interplay among superconductivity, charge density wave order, topologically nontrivial electronic band structure and geometrical frustration. Here, we probe the electronic band structure underlying these exotic correlated electronic states in CsV 3 Sb 5 with quantum oscillation measurements in pulsed fields up to 86 T. The high-field data reveal a sequence of magnetic breakdown orbits that allows the construction of a model for the folded Fermi surface of CsV 3 Sb 5 . The dominant features are large triangular Fermi surface sheets that cover almost half the folded Brillouin zone. These sheets have not yet been detected in angle resolved photoemission spectroscopy and display pronounced nesting. In conclusion, the Berry phases of the electron orbits have been deduced from Landau level fan diagrams near the quantum limit without the need for extrapolations, thereby unambiguously establishing the nontrivial topological character of several electron bands in this kagome lattice superconductor.

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗
DOE OSTI2023

Direct Mass Measurements to Inform the Behavior of 128m $\mathrm{Sb}$ in Nucleosynthetic Environments

Nuclear isomer effects are pivotal in understanding nuclear astrophysics, particularly in the rapid neutron-capture process where the population of metastable isomers can alter the radioactive decay paths of nuclei produced during astrophysical events. The β-decaying isomer 128m Sb was identified as potentially impactful since the β-decay pathway along the A = 128 isobar funnels into this state bypassing the ground state. Here we report the first direct mass measurements of the 128 Sb isomer and ground state using the Canadian Penning Trap mass spectrometer at Argonne National Laboratory. We find mass excesses of -84564.8(25) keV and -84608.8(21) keV, respectively, resulting in an excitation energy for the isomer of 43.9(33) keV. These results provide the first key nuclear data input for understanding the role of 128m Sb in nucleosynthesis, and we show that it will influence the flow of the rapid neutron-capture process.

73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
DOE OSTI2024

Fermiology and transport properties of the candidate topological crystalline insulator SrAg 4 ⁢Sb 2

Compared to time-reversal symmetry-protected ℤ 2 topological insulators and Dirac/Weyl semimetals, there are significantly fewer candidates for topological crystalline insulators. SrAg 4 ⁢Sb 2 is predicted to exhibit topological crystalline insulator behavior when considering spin-orbit coupling. In this study, we systematically investigate single crystals of SrAg 4 ⁢Sb 2 using electrical transport and magnetic torque measurements, along with first-principles calculations. Our transport data reveals its compensated semimetal nature with a magnetoresistance up to around 700% at 2 K and 9 T. Analysis of de Haas–van Alphen oscillations uncovers a Fermi surface consisting of three distinct Fermi pockets with light effective masses. Comparison between the three-dimensional fermiology obtained from our oscillation data and the first-principles calculations demonstrates excellent agreement. This confirms the accuracy of the calculations, which indicate a band inversion centered at the 𝑇 point and identify the existence of nontrivial tube and needle hole Fermi pockets at Γ, alongside one trivial diamond electron pocket at the 𝐹 point in the Brillouin zone. Furthermore, symmetry and topology analysis results in two potential sets of topological invariants, suggesting the emergence of two-dimensional gapless Dirac surface states either on the 𝑎⁢𝑏 planes or on both the 𝑎⁢𝑏 planes and mirror planes, protected by crystal symmetries. Therefore, SrAg 4 ⁢Sb 2 emerges as a promising candidate topological crystalline insulator.

36 MATERIALS SCIENCE↗
DOE OSTI2024

La 4 Co 4 X ( X = Pb , Bi , Sb ) : A demonstration of antagonistic pairs as a route to quasi-low-dimensional ternary compounds

We outline how pairs of strongly immiscible elements, referred to here as antagonistic pairs, can be used to synthesize ternary compounds with low or quasi-reduced-dimensional motifs intrinsically built into their crystal structures. By identifying third elements that are mutually compatible with a given antagonistic pair, ternary compounds can be formed in which the third element segregates the immiscible atoms into spatially separated substructures. Quasi-low-dimensional structural units, such as sheets, chains, or clusters are a natural consequence of the immiscible atoms seeking to avoid close contact in the solid state. Further, as proof of principle, we present the discovery, crystal growth, and basic physical properties of La 4 ⁢Co 4 ⁢$\mathrm{X}$ (X = Pb, Bi, Sb), a family of intermetallic compounds based on the antagonistic pairs Co-Pb and Co-Bi. La 4 ⁢Co 4 ⁢$\mathrm{X}$ adopts an orthorhombic crystal structure (space group Pbam) containing quasi-two-dimensional Co slabs and La-X polyhedra that stack in an alternating manner along the α axis. Consistent with our proposal, the La atoms separate the Co and X substructures, ensuring there are no direct contacts between the members of the immiscible (antagonistic) pair. Within the Co slabs, the atoms occupy the vertices of corner sharing tetrahedra and triangles, and this bonding motif produces narrow electronic bands near the Fermi level that favor magnetism. The Co is moment bearing in each La 4 ⁢Co 4 $\mathrm{X}$ compound studied, and we show that whereas La 4 ⁢Co 4 ⁢Pb behaves as a three-dimensional antiferromagnet with T N =220K, La 4 ⁢Co 4 ⁢Bi and La 4⁢ Co 4 ⁢Sb have behavior consistent with low-dimensional magnetic coupling and ordering, with T N =153K and 143 K, respectively. In addition to the Pb-, Bi-, and Sb-based La 4 ⁢Co 4 ⁢$\mathrm{X}$ compounds, we also were likely able to produce an analogous La 4 ⁢Co 4 ⁢Sn in polycrystalline form, although we were unable to isolate single crystals. We anticipate that identifying and using mutually compatible third elements together with an antagonistic pair represents a generalizable design principle for discovering new materials and new structure types containing low-dimensional substructures.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Role of Oxygen on Chemical Segregation in Uncapped Ge 2 Sb 2 Te 5 Thin Films on Silicon Nitride

Germanium antimony telluride has been the most used and studied phase-change material for electronic memory due to its suitable crystallization temperature, amorphous to crystalline resistance contrast, and stability of the amorphous phase. In this paper, the segregation of Ge in a Ge 2 Sb 2 Te 5 film of 30 nm thickness during heating inside the transmission electron microscope was observed and characterized. Furthermore, Ge 2 Sb 2 Te 5 film was deposited using sputtering on a Protochips Fusion holder and left uncapped in atmosphere for about four months. Oxygen incorporated within the film played a significant role in the chemical segregation observed which resulted in amorphous Ge-O island boundaries and Sb and Te rich crystalline domains. Such composition changes can occur when the phase-change material interfaces insulating oxide layers in an integrated device and can significantly impact its electrical and thermal properties.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
NASA NTRS1979

Nebular condensation of Ga, Ge and Sb and the chemical classification of iron meteorites

The quantization of the Ga and Ge contents in iron meteorites, which is used as a key parameter in the chemical classification of iron meteorites, is discussed in terms of nebular condensation. The calculation of nebular equilibrium condensation is examined, taking into account the dependence of the activity coefficient on temperature and composition, and recent calculations of the condensation temperatures of Ga, Ge, Sb, Au, As and Cu are presented, noting that Ge is the most volatile siderophile, followed by Ga and Sb. The narrow intragroup ranges of Ga and Ge are interpreted in terms of minimal fractionation during core crystallization, while the larger ranges of Sb are attributed to its significantly smaller solid/liquid distribution coefficient in IIIAB meteorites.

Wai, C. M.↗
NASA NTRS1989

Surface morphologies and electrical properties of molecular beam epitaxial InSb and InAs(x)Sb(1-x) grown on GaAs and InP substrates

Surface morphologies and electrical properties of molecular beam epitaxial InSb and InAs(x)Sb(1-x) grown on GaAs and InP substrates are discussed. The crystals are all n-type at 300 K and lower temperatures. The surface morphology and electrical characteristics are strongly dependent on Sb(4)/In flux ratio and substrate temperature. The highest mobilities in InSb on InP are 70,000 at 300 K and 110,000 cm(2)/V.s (n=3x10(15) cm(-3)) at 77 K. The mobilities in the alloys also increase monotonically with lowering of temperature. Good quality InAs(x)Sb(1-x) was grown directly on InP substrates by molecular beam epitaxy.

Oh, J. E.↗
NASA NTRS1988

Electrochemical stability of LiMF6 (M = P, As, Sb) in tetrahydrofuran and sulfolane

The electrochemical stability of LiSbF6 and LiPF6 in aprotic organic solvents has been investigated. Electrochemical studies, conductivity measurements, and open-circuit stability tests were conducted on LiSbF6 in tetrahydrofuran and sulfolane. Cyclic voltammetric studies of SbF6(-) were compared with those of AsF6(-) and PF6(-) anions. Sb(V) was reduced to Sb(III), and then to Sb(0). AsF6(-) was reduced to AsF3, while no reduction of PF6(-) was observed. The reduction products of AsF6(-) and SbF6(-) passivated the glassy carbon electrode, presumably due to LiF precipitation. Peak potentials were observed to shift in the positive direction as a function of concentration. This was accounted for on the basis of a follow-up chemical reaction.

Nanjundiah, C.↗
DOE OSTI2024

Optimization of Sb-doped CdSeTe Solar Cells

The effect of high-temperature annealing (HTA) treatments and Cd-excess during the in-situ doping of CdSeTe:Sb is investigated. Optimized treatments eliminate the wurtzite phase from the as-deposited CdSeTe layer, while facilitating Se intermixing and grain size enhancement before CdCl2 treatment. The improved device stack quality results in a VOC improvement of 250 mV. VOC is further improved by tuning the Cd/Sb flux ratio during CdSeTe:Sb deposition. The lowest defect concentration is achieved at Cd/Sb of 1.4:1, which produced the best VOC CdSeTe:Sb cell with VOC = 849mV, despite a decreased carrier concentration due to the harsh CdCl2 treatment.

14 SOLAR ENERGY↗
DOE OSTI2020

Materials Data on Sb(PO3)4 by Materials Project

Sb(PO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Sb5+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sb–O bond distances ranging from 2.18–2.47 Å. There are four inequivalent P+4.75+ sites. In the first P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.60 Å. In the second P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.49–1.63 Å. In the third P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.51–1.61 Å. In the fourth P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.49–1.61 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P+4.75+ atoms. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the ninth O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to one Sb5+ and one P+4.75+ atom. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to one Sb5+ and one P+4.75+ atom. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb(PO3)4 by Materials Project

Sb(PO3)4 crystallizes in the orthorhombic C222_1 space group. The structure is three-dimensional. Sb5+ is bonded to seven O2- atoms to form distorted SbO7 pentagonal bipyramids that share corners with seven PO4 tetrahedra. There are a spread of Sb–O bond distances ranging from 2.13–2.40 Å. There are five inequivalent P+4.75+ sites. In the first P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO7 pentagonal bipyramids and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.49–1.61 Å. In the second P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO7 pentagonal bipyramids and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.51–1.62 Å. In the third P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one SbO7 pentagonal bipyramid and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.47–1.64 Å. In the fourth P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO7 pentagonal bipyramids and corners with two equivalent PO4 tetrahedra. There is two shorter (1.51 Å) and two longer (1.60 Å) P–O bond length. In the fifth P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO7 pentagonal bipyramids and corners with two equivalent PO4 tetrahedra. There is two shorter (1.51 Å) and two longer (1.59 Å) P–O bond length. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sb5+ and one P+4.75+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Sb5+ and one P+4.75+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one P+4.75+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the eleventh O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the twelfth O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb(PO3)4 by Materials Project

Sb(PO3)4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Sb5+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sb–O bond distances ranging from 2.21–2.48 Å. There are two inequivalent P+4.75+ sites. In the first P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.49–1.62 Å. In the second P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sb5+ and one P+4.75+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb(PO3)4 by Materials Project

Sb(PO3)4 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Sb–O bond distances ranging from 2.07–2.21 Å. There are four inequivalent P+4.75+ sites. In the first P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 47–48°. There are a spread of P–O bond distances ranging from 1.52–1.60 Å. In the second P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 45–51°. There are a spread of P–O bond distances ranging from 1.52–1.59 Å. In the third P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one SbO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedral tilt angles are 44°. There are a spread of P–O bond distances ranging from 1.46–1.65 Å. In the fourth P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one SbO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedral tilt angles are 47°. There are a spread of P–O bond distances ranging from 1.46–1.66 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sb5+ and one P+4.75+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sb5+ and one P+4.75+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sb5+ and one P+4.75+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Sb5+ and one P+4.75+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two P+4.75+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sb5+ and one P+4.75+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms. In the tenth O2- site, O2- is bonded in a single-bond geometry to one P+4.75+ atom. In the eleventh O2- site, O2- is bonded in a single-bond geometry to one P+4.75+ atom. In the twelfth O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb(PO3)4 by Materials Project

Sb(PO3)4 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. Sb5+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sb–O bond distances ranging from 2.14–2.31 Å. There are four inequivalent P+4.75+ sites. In the first P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.60 Å. In the second P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.48–1.63 Å. In the third P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the fourth P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.51–1.62 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one P+4.75+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the eleventh O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the twelfth O2- site, O2- is bonded in a 1-coordinate geometry to one Sb5+ and one P+4.75+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb(PO3)4 by Materials Project

Sb(PO3)4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Sb–O bond distances ranging from 2.10–2.20 Å. There are two inequivalent P+4.75+ sites. In the first P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO6 octahedra and corners with two equivalent PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 23–47°. There are a spread of P–O bond distances ranging from 1.51–1.60 Å. In the second P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one SbO6 octahedra and corners with two equivalent PO4 tetrahedra. The corner-sharing octahedral tilt angles are 40°. There are a spread of P–O bond distances ranging from 1.46–1.64 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one P+4.75+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Sb5+ and one P+4.75+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P+4.75+ atoms. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb(PO3)4 by Materials Project

Sb(PO3)4 crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Sb–O bond distances ranging from 2.07–2.22 Å. There are two inequivalent P+4.75+ sites. In the first P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one SbO6 octahedra and corners with two equivalent PO4 tetrahedra. The corner-sharing octahedral tilt angles are 42°. There are a spread of P–O bond distances ranging from 1.46–1.64 Å. In the second P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO6 octahedra and corners with two equivalent PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 48–49°. There are a spread of P–O bond distances ranging from 1.52–1.58 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one P+4.75+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sb5+ and one P+4.75+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sb5+ and one P+4.75+ atom. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb(PO3)4 by Materials Project

Sb(PO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Sb5+ is bonded to seven O2- atoms to form distorted SbO7 pentagonal bipyramids that share corners with seven PO4 tetrahedra. There are a spread of Sb–O bond distances ranging from 2.15–2.34 Å. There are four inequivalent P+4.75+ sites. In the first P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one SbO7 pentagonal bipyramid and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.45–1.65 Å. In the second P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO7 pentagonal bipyramids and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.51–1.60 Å. In the third P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO7 pentagonal bipyramids and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.62 Å. In the fourth P+4.75+ site, P+4.75+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent SbO7 pentagonal bipyramids and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Sb5+ and one P+4.75+ atom. In the second O2- site, O2- is bonded in a distorted linear geometry to one Sb5+ and one P+4.75+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two P+4.75+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sb5+ and one P+4.75+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one P+4.75+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to two P+4.75+ atoms. In the ninth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two P+4.75+ atoms. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Sb5+ and one P+4.75+ atom. In the eleventh O2- site, O2- is bonded in a single-bond geometry to one P+4.75+ atom. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to one Sb5+ and one P+4.75+ atom.

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